Texarkana News What's with the worms? | Is another invasive species invading East Texas? Halie Buckner and her family are going heavy on the salt to get rid of about 40 invasive hammerhead flatworms on their property seven miles outside of Hughes Springs, Texas. by Christy Busby Worsham Jul. 2 2021 @ 10:18pm Land planaria, also known as hammerhead flatworms or arrowhead worms, are burrowing their way into East Texas soil. The invasive species poses a threat to earthworms, which are beneficial. However, land planaria are also known to eat things like slugs that are considered harmful. (Photo courtesy of Halie Buckner) CASS COUNTY, Texas — Halie Buckner and her family are going heavy on the salt to get rid of about 40 invasive hammerhead flatworms on their property seven miles outside of Hughes Springs, Texas.